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Altera_Forum's avatar
Altera_Forum
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15 years ago

Unwanted offset attenuation in FIR filters

My FIR is now working so far - thanks to Altera Guru "MSchmitt" - but I still have two problems left. Please have a look at the attached pictures - there is an unwanted offset attenuation of 6dB in the filter characteristic. What can I do against that?

23 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    I do not have access to modelsim or matlab, so the Signal Tap II Logic Analyzer is my only friend ;-)

    I have amore concrete picture of my problem now - thanks to the ones that helped - but I guess it is a good idea to start a new threat with a better initial description now ...
  • Altera_Forum's avatar
    Altera_Forum
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    and you should look into octave or one of the other free MATLAB-esque tools